Switch.



s. BUCHSBAUM SWITCH. APPLiCATON FILED OCT. l, |915.

Patent@ Apr. 10, 1917.

E /2 .IJ L u STATES-PATENT omen.

SAMUEL BUCHSBAUM, OF CHICAGO, ILLINOIS.

SWITCH.

Specification of Letters Patent.

Patented Apr. 1o, 1917'.

Application 1edl0ctober-18, 1915. Serial No. 56,400.

the following is a full, clear, concise, and eX- act description, lreference being had to the accompanying drawings, forming a part of this specification.

Mylinvention relates to switches, and has for its object the provision of an improved device of thischaracter in which automatically Aquick acting mechanism is used to break the4 circuit.

It is the object of this invention to provide a. novel form of mechanism to accomplish this quick acting movement with as few parts as possible..

I will -describe my invention more specifically by 'reference to the accompanying drawing illustrating two forms of carrying 'out my invention, in which:

Figure 1 is a central section showing some of the parts of my improved switch in lelevation;

. Fig. 2 is a section on line Fig. 3 is a detail of construction;- v Fig. 4 is a perspective view of the extensible contact making element;

5 isa view showing a modification,

and

Fig. 6 is a ydetail of construction. Referring ymore particularly to Figs. 1

and 2, I show a casing 1 within which the switchelements are contained, which casing a-a of Fig. 1;

is provided with an attachment' strip 2 of the usual variety by means 'of which the casing may be fastenedv to the wall as is well understood. A front plate of the ordinary variety partly shown in Fig ..`2 covers the structure, permitting the extension therethrough yhowever of buttons 4, 5,r as willbe readily understood. These buttons 4,'5 also project through the strip 2 and are movable in and out similarly to the buttons'v in switches of a similar nature. These buttonsA 4 and 5 have'extension rods 6 and 7 which have v their ends pivotally connected with the insulatedz rocker arm`f8. f -This rocker arm by means of the pin 9' ispivotal'ly supported between the'ends'o'fj the U-shaped frame 10,

-f this frame being'fpreferably'secured to the strlpQ. The rods 6 and .QT-are as shown in :thedrawing*'preferably mounted between .An extensible member ,generally -displacement, also permitting of its being by which the parts r11"y which fare Ycomposed of' insulating material and form the rocker arm cured to said rocker arm. `The rocker arm 8 is further provided with the cut-away portion 16 and abutments 17 and 18 formed. at

each of its ends 'to conine the movement of the Contact making element 19. The cutaway portion 16 forms a track or race, within. which the contact closing element 19 operates to open or close said switch when either one' or the other of the buttons 4 and 5 are operated.- desi ated' 20 is utilized, which has one of its en s seated against the strip 2 and carries at its opposite end the contact closing element 19. This extensiblemember is composed vof two relatively movable members 21 and 22, the member 21 being seated in' the strip 2 and ythe member 22 carrying the Contact' element whereby these elements'are held comprises..

the fingers 23, 23, provided upon themember 21, these fingers being bent so that they lembrace the member 22 and permit of ya sliding movement between the parts 21 and 22, when the contact member -19 is actuated along the track or racel v16. The end of the member. 21 which is seatedl against the plate 2 is preferably constructed with the forked end 24 having the portions 25, 25,v which are mounted and confined in the lateral recesses 26, 26, of the aperture 27 provided in the frame 10. This construction readily per' mits the end of the member 21 to .project through the aperture and to be seated against the plate 2 and at the same time forms a means whereby said member is held against pivotally mounted against said strip 2.

The other slidable member 22 carries a means for closing the circuitbetween the two mou ted in the casing'l and 'forni a means theconductor of the outside cir- Acon ecting springs 28 and 29 which' are cuit maybe brought to within the casing 1.

member` 21 is provided with an insulating ment 19 is mounted,` Thisv member 30 insu-v lates the contact making element 19 from the lThe end ofthe member 22 remote from the lblock 30 upon which the contact'making ele'- 3() is designed to be placed between the laterally projecting ends 31 and 32 of the contact making element 19 and ris provided with the projections 33, 33'at its ends and the projection's34, 34 between its extremities, these latter projections in combination with the recesses 35, 35, a'nd the projections 3G?L and 36a adjacentsaid recesses formed in the elef ment 19, produce a means whereby said element 19 is held in its proper relation to the member 22. y

It will be noted that the projections 33, 33 protrude-slightly above and below. the laterally projecting ends 31 and 32 of the member 19. The object `of this construction is to decrease the spark which is ordinarily produced when contact is made or broken Vbetween the element 19 and the connecting springs 28 and 29. As will be evident, these projections 33, 3 3 enter bet/Ween the springs 28 andy 29 previous to the members and 32, thereby promoting a more uniform make and break, and consequently reducing the spark.

To produce a quick make and break of the electrical connections when the rocker bar 8 is rotated, and to cause the member 19 to ride against said rocker bar, and also to insure the proper seating ofthe member 21 against the strip 2, a coiled spring 36is utilizedwhich re-actsl between the opposite ends of the relatively movable members generally designated 20.-

InF ig. 5, I showv a modification in which the device is shown 4applied to a pendant switch having a rocker bar operating plunger 37 which is provided with the reduced portion 38 intermediate its ends, the reduced portion being straddled by the forked end of the member 39'which projects from the rocker arm 40. Thus when the plunger is operated the contact member 19 willl open and close the circuit between the contact springs 41.

It will be evident from the foregoing description that wheneither of the buttons 4 or 5 is operated the rocker arm S will be inclined and as ysame is rocked bac t and forth the Contact making element 19 will slide back and forth in the cut-away portion 1G toward and away from the contact springs 1. A device of the class described having a pair of contact making elements. one of which is movable, a pair of relatively movable members, means provided upon' one of said members whereby the other member may slide upon said first aforesaid member,

one of said members being piovidedwi-th a contact making element, the other of said vthe vfree extremity of said bar.

relatively movable members abutting a stationary member, and a spring re-acting between the ends of the relatively 'movable members. l j l 2. A 'device of he class described having a swinging member, a pair of contact making elements, one of which is secured to said swinging member, one end of said swinging member abutting a stationary member, said member being longitudinally extensible.

3. A device of the class described having a p'air of contact making elements,I one of which is movable, av pair of swinginglymounted relatively movable members, one of' said members' having said contact making element provided thereon, and the other of said relatively movable members abutting astationary member. y A

4. A dev-ice of the class described having a -pair of Contact ,making eleinents,. one of which is movable, means for moving said last mentioned contact element toward and away from the other contact making element, said means including a rotatable member, a swinginginember provided with said contact making element extending between said rotatable member and a stationary member, one end of said member abutting said stationary member.

5. A device of the class described having a l pair 'of contact making elements, one of which is movable toward and away from the other contact making element, a pair of swingingly mounted relatively movable vment, a bodilymovable contact element. a rocker bar and spring to control said mov- .'able element by snap action, a shifting bar carrying said Contact element, an abutment. said spring bei-iig confined between sa'id abutment and said movable contact element,

and swinging means for slitylably carryi 7. A switch lstructure having acoiitact element, a -bodiljT movable contact element, a rocker bar and spring to control said movable elenient b v snap 'ar-tion,l a shifting bar carrying said contact element', -and `swinging 'means for slidably carrying the free extremity of said ba 3. In a device of the character described the combination with a casing. of a bridge secured to said casing havingdownwardly extending arms at a right anglc'below said 125 j bridge, guides provided in said .casing forr 7 said arms, Ya contact moving barpivoted tiff said arms, a movable contact therefor, a spring adapted with said bar to control said Contact, an arm associated'witli said contact, 180

and a swinging support for said arm mount'- ed uponl said bridge.v

9,. A device of the 'character described having a' 'switch element, a'mo'vable switch element, a yrockingr bar to control said movable switch 'element along which' said, movable switch element is movable, means to define the limit -of movement of said .movable switch element, resilient means to hold said movable switch element in association with saidrocking banand a pivotalljv7 mounted telescoping lroekinglink having its free end associated Wit'glisaidl movable switch element.

10. A device of the character described .y having a switch element` a cvlindricalmov'- able switch element, a rocking bar to control said movable switch element along which said movable'switeh element rolls, means, to define the limit of movement of said movable switch element, resilient means to hold saidmovable switch element in association With said rock-ing bar, and a pivotally mounted telescoping rocking link having its free endassociated with said movable-switch element'.

ln Witness whereof, l hereunto subscribe my 4name this 15th day of October, A. D.,

SAMUEL BUCHSBAUM. lVi'tnesses HAZELA. JONES, A. LYDA JONES. 

